Hartley was an electoral district of the Legislative Assembly in the Australian state of New South Wales, created in 1859 in the Lithgow area and named after the town of Hartley, near Lithgow. It replaced part of Cook and Westmoreland. From 1891 to 1894, it elected two members. In 1920, with the introduction of proportional representation, it was absorbed into Bathurst, along with Orange. It was recreated in 1927 and abolished in 1968 and partly replaced by Blue Mountains.[1][2][3]